优化回调设置方式

src/main/java/com/genersoft/iot/vmp/conf/redis/RedisRpcConfig.java

@@ -193,12 +193,10 @@ public class RedisRpcConfig implements MessageListener {
     }
 
     private void setCallback(long key, CommonCallback<RedisRpcResponse> callback)  {
-        if (!callbacks.containsKey(key)) {
+        // TODO 如果多个上级点播同一个通道会有问题
         callbacks.put(key, callback);
     }
 
-    }
-
     public void removeCallback(long key)  {
         callbacks.remove(key);
     }